Title |
Influence of light intensity on surface-free energy and dentin bond strength of single-step self-etch adhesives
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Published in |
Dental Materials Journal, January 2015
|
DOI | 10.4012/dmj.2015-045 |
Pubmed ID | |
Authors |
Kie NOJIRI, Akimasa TSUJIMOTO, Takayuki SUZUKI, Syo SHIBASAKI, Saki MATSUYOSHI, Toshiki TAKAMIZAWA, Masashi MIYAZAKI |
Abstract |
In this study, we investigated the influence of light intensity on the surface-free energy and dentin bond strength of single-step selfetch adhesives. The adhesives were applied to the dentin surfaces of bovine mandibular incisors and cured with light intensities of 0 (no irradiation), 200, 400, and 600 mW/cm(2). Surface-free energies were determined by measuring the contact angles of three test liquids placed on the cured adhesives. Dentin bond strengths of the specimens were also measured. Polymerization with a higher light intensity resulted in a lower surface-free energy of the cured adhesives. The greatest bond strength was achieved when a light intensity of 400 mW/cm(2) or greater was used. Our data suggest that the surface-free energy and dentin bond strength of single-step self-etch adhesives are affected by light intensity of the curing unit. |
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